Setting the query interval
You can define the frequency at which MLD query messages are sent. For example, if you want queries
to be sent every 50 seconds, enter a command such as the following.
device(config)# ipv6 mld query-interval 50
Syntax: [no] ipv6 mld query-interval seconds
The seconds variable specifies the MLD query interval in seconds. You can specify from 2 through 3600
seconds. The default value is 125 seconds.
To define the frequency at which MLD query messages are sent for a specified VRF, enter the following
commands.
device(config)# ipv6 router pim vrf blue
device(config-ipv6-pim-router-vrf-blue)# ipv6 mld query-interval 50
Syntax: [no] ipv6 router pim [ vrf vrf-name ]
The vrf parameter specifies the virtual routing instance (VRF) specified by the variable vrf-name .
Setting the last listener query interval
The Last Listener Query Interval is the Maximum Response Delay inserted into Multicast-Address-
Specific Queries sent in response to Done messages, and is also the amount of time between
Multicast- Address-Specific Query messages. When the device receives an MLDv1 leave message or
an MLDv2 state change report, it sends out a query and expects a response within the time specified by
this value. Using a lower value allows members to leave groups more quickly. You can set the last
listener query interval by entering a command such as the following.
device(config)# ipv6 mld llqi 5
Syntax: [no] ipv6 mld llqi seconds
The seconds variable sets the last listener query interval in seconds. You can specify from 1 through 25
seconds. The default is 1.
To set the last listener query interval for a specified VRF, enter the following commands.
device(config)# ipv6 router pim vrf blue
device(config-ipv6-pim-router-vrf-blue)# ipv6 mld llqi 5
Syntax: [no] ipv6 router pim [ vrf vrf-name ]
The vrf parameter specifies the virtual routing instance (VRF) specified by the variable vrf-name .
Setting the robustness
You can specify the number of times that the switch sends each MLD message from this interface. Use
a higher value to ensure high reliability from MLD. You can set the robustness by entering a command
such as the following.
device(config)# ipv6 mld robustness 3
Syntax: ipv6 mld robustness seconds
The seconds variable sets the MLD robustness in seconds. You can specify from 2 through 7 seconds.
The default is 2 seconds.
Setting the query interval
FastIron Ethernet Switch IP Multicast Configuration Guide 199
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